Essential requirements for a handset telephony facility provided by terminal equipment intended for direct connection to an analogue interface of the public switched telephone network— 40 стр.
Specification for general requirements for apparatus for connection to public switched telephone networks run by certain public telecommunication operators— 44 стр.
Draft standard to match to and work with ETS 300 001/NET4. Specification for simple telephones for connection to public switched telephone networks run by certain public telecommunications operators— 68 стр.
Essential requirements for terminal equipment intended for connection to 2-wire analogue speechband leased lines of the public telecommunications network— 24 стр.
